Scroll-forming machine.



N. P. PERKINS. I SCROLL FORMING MACHINE.

' APPLICATION FILED MAR. 27' l9l6. L%%%%W% Patented Dec. 11, 1917.

2 SHEETS-SHEET I anon n13:

N. P. PERKINS. SCROLL FORMING MACHINE.

APPLICA TION FILED MAR. 22; I916- lfifi fin Patented Dem. 11.1%?

2 SHEETS-SHEET 2.

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NICHOLAS P. PERKINS, or CHARLESTON, wnsr VIRGINIA, ASSIGNOR or ONE-HALF I30 I WILLIAM a JDIson oaNInELL, or CHABLESTON,WEST VIRGINIA.

SCROLL-FORMING MACHINE.

Leaaara.

To all whom it may concern:

Be it known that I, NICHOLAS P. PERKINS, a citizen of the United States, residing at Charleston, in the county of Kanawha and State of West Virginia, have invented new and useful Improvements in Scroll-Forming ,Machines, of which the following is a speclpense incident to the production of scrollformed.

like ornamentationson the necks ofviolins and the like by accomplishing mechanlcally an operation heretofore manually per- Afurther object of this invention is. to construct a machine characterized by simplicity and efficiency in operation, through the instrumentality of which scroll-like or namentations may be expeditiously, accurately and uniformly effected without employment of skilled labor. I

A further object of this invention is to design a machine wherein, after the blank has been operatively positioned upon its support, rotation of the latter will automatically recede the blank with respect to the cutter, to effect the desired ornamentation.

' With these and other objects in view, my

invention consists in certain novel details of construction, combination and arrangement of parts to be more particularly hereinafter set forthand claimed. I

Briefly stated, this invention comprises a horizontally disposed rotary spindle equipped with an angularly shaped cutter adapted to operate upon a blank fixedly seated in a work-support situated ina plane oblique to theaxis of thecutter, said support having, through suitably arranged cooperating mechanism, a spiraling movement, whereupon, when actuated, it will cause the cutter to produce a spiral-like volute on the blank. 1 c I Referring more particularly to the draw- Specification of Letters Patent. Pa tgntedl' Dec. 11, 191% Application filed March 27, 1916. Serial No. 86,967. I

ings, in which corresponding parts are indi cated by similar reference characters Figure 1 is a fragmentary side elevation, with parts shown in section, of my improved shaping machine, illustrating a neck operatively positioned and the scroll-like ornamentation partially formed.

Fig. 2 is a top plan view.

Fig. 3 is a"fragmentary side elevation illustrating a neck operatively positioned with respect to the cutter. c Fig. 4 is a fragmentary perspective view of the work-support mounting.

Fig. 5 is a fragmentary bottom plan View of the work-support. I I jln the manufacture of musical instruments such as" violins, it has been the practice to effect the scroll-like ornamentations of the neck entirely by hand, but this method, owing to the expense entailed by the employment of-skilled labor as well as the time required to complete the carving is undeslrable and it is therefore to the end that these deficiencies may be eliminated and work of the character specified rapidly, accurately anduni-formly accomplished, that I have designed the machine constituting the subject matter of this invention.

In the illustrated embodiment characterizing my invention, there is shown a sup-I porting frame 1, having horizontally spaced bearings 52 which revolubly accommodate an arbor or spindle 3. This spindle has a tapering extension 4, the outer extremity of I which is adapted to receive a suitable cutter 5. The character of cutter depends largely on the nature of the work, but preferably its cutting surface is angular in outline,

wherein it may have a compound cutting effect, that is to say, the several convolu tions and vertical walls of the scroll are simultaneously carved. A pulley 6is se cured to the arborB intermediate its bear- To position the work-support in angular relation with respect to the longitudinal axis I i ings, to be connected with a driving belt opening 10, fora purpose hereinafter to be stated. One extremity of casting 9 has integrally formed therewith a clevis 11, the arms of which are adapted to embrace the opposite sides of frame 1. The apertured.

extremities of the clevis are pivotally connected to the bolt 12,'-slidably positioned in the vertically disposed transverse slot 13 formed sary. The free extremity of casting 9 has integrall formed :therewith an upwardly and outwardly projecting extension 14 terminating in a collar'15 intended to encircle the cutter in a plane oblique to its axis,

.Collarj. 15 circumscribes .an upstanding flangellfi surrounding annular opening 17 centrally formed in the annular work-support 18, said'cfollar beingma ntained 1n position by the laterally extending flange 19 n formed around periphery of auxiliary collar 19, in threaded engagement with flange l6, asclearly stemming". l of the drawings. Mounting the work-support 18 in this manner'enables the latter to be freely rotated about itsaxis in alpla'neat an angle tothat of the spindle, as will be readily understood Without further discussion.

The outer periphery of work-supp'ort"18 is beveled andcogged as at 21. These cogs initer with thete'e'th of pinion 22, which is keyed on the upperendof'an externally threaded pintle23. Thethreaded portion of pintle 23 extends through the internally threaded opening formed in nut 24, which 7 latter is seated in opening 24 in extension i 25. of'the frame, This nut/is substantially elliptical outline, to afford an arcuate movement to'the pintle as it movesftherethrough, wherein it is continually maintained'in propenrelation'with respect to the worlr-support. The upper end of pintle 23 passes through opening 10 in casting 9, and

is rotatably connected thereto by suitable :fasteningelements 26. By virtue of this arrangement of elements, as work-support 1 8. is rotated, its noveinent ,ivillbe imparted to the pinion 22," and as this revolves, the pinionto which it is keyed will be caused to a'scend or descend, dependent on the direction 'of rot'ation'of the work-support. Meanwhile, since thecasting 9 is connected with the upper 'endofpintle 23, theasc'ension and descension of the latter will actuate said castingj'and' its as'sociated collar, to advance respect to that of thecntt'er.

- The blank or neck 27 is secured to the .iin'der surface of work-support 1S by means of relatively arranged clamping members 28,

. or recede theaxis of the wo'rk support with f with the portion to operatedupon seated ifit ening 1.7p said work-support, wherein be operated uponby the rotating cutter. In order to conveniently rotate the work-support, a 'hand-grip 29 is formed on under surface thereof, adjacent its outer peripher ,Cashews in Figs. 1,2 and abr thedrawings.

rotated, thus revolving the neck about the axis of its knee, said axis being, at the same time, through mechanism hereinbefore described, gradually receded from that of the cutter, whereupon the latter, by virtue of this spiraling movement, will be caused to produce the spiral-like ornamentation shown in Figs. 1 and 2 of the drawings. Although .in the drawings and description, but one work-support is shown, it is understood that another could be conveniently afiixed to' the opposite side of the frame.

From the foregoing description it will be apparent that I have designed a scroll-forming machine of exceptionally few parts, as well as one which will enable the rapid production of an accurately and uniformly carved scroll by inexperienced workmen.

Although in the foregoing, I have set forth certain elements as best adapted to perform the functions allotted to them, nevertheless, it is to be understood that vari- 'ousminor changes as to form, substance, etc., may be resorted to, within the scope of the appended claims, without departing from or sacrificing any of the principles of this i11- ventlon.

Having now described my invention, what I claim is 1. In a shaping machine of the character described, the combination of a rotary cutter and a coiiperati'ng spiraling work-support, adapted to actuate the point of the work engaged by the cutter in a fiat spiral course to produce a scroll-like ornamentation, substantially as and for the purpose set forth.

' 2. In a shaping machine of the character described, the combination of a rotary cutter and an angularly arranged spiraling work-support cotiperating therewith, adapted'to actuate the point of the work engaged by the cutter in a fiat 'spiral course to produce' a scroll-like "ornamentation, substantially as and for the purpose set forth.

3. In a shaping machine of the character described, the combination of a horizontally disposed rotary cutter and a relatively arranged spiralingwork-support cocperating therewith, and adapted to actuate the point of the work engaged by the cutter in a flat spiral course whereby to produce a scrolL like ornamentation, substantially as and for the purpose set forth.

4. In a shaping machine of the character described, the combination of a horizontally disposed rotary cutter and an angularly arranged" spiraling 'work s'u'ppor't 'eotiperating therewith, and adapted toactuate the-pointlike ornamentation, substantially 'as and for the purpose set forth.

5;- In shaping machine of the character described, the combination of a rotary cut-' ter, an annular-work-support relatively arranged with respect to said cutter, and means to imparta" spiraling movement to the worksupp'or't, coincident with the plane of" the latter to effect a i scroll-like ornamentation on a blank, substantially as andfor thepun pose setforthl 1 1 j 6. In shaping machine-0f the character described, the combination of a rotary cutter, an annular work-support situated with its axis oblique to that of the cutter, and means to impart a spiraling movement to said work support coincident with the plane of the latter, to effect a scroll-like orna'; mentatioir on a blank, substantially as and 7 collar and means in connection with said adfor the purpose 'set forth.

7.111 a shaping machine of the character described, the combination ofa horizontally disposed rotary cutter, an annular worksupport situated with ltS axis' in angular relation with respect tothat of the cutter, and

' means toinjipar't a spiralingmovement to said work support coincident with the plane of the latter to effect a scroll-like ornamenta tion on a blank, substantially as and for the purpose set forth.

8. In a shaping machine of the character described, the combination with a rotary spindle having an angularly' faced cutter; of a spiraling work-support cooperating with said cutter, adapted to" actuate the point of the work engaged by the cutter in a flat spiral course to effect a scroll-like ornamentation, substantially as and for the purpose setforth.

9. In a shaping machine of the character described, the combination with a horizontally disposed rotary spindle having an angularly faced cutter, a spiraling worksupport cooperating therewith, and situated with its axis in angular relation with respect to that of said cutter, said support being adapted to actuate the point of the work engaged by the cutter in afiat spiral course to effect a scroll-like ornamentation, substantially as and for the purpose set forth.

10. In a shaping machine of the character described, the combination of a rotary cutter, an annular work-support cooperating with said cutter, and situated with its axis in angular relation with respect to that of the cutter, said support having therein a centrally arranged opening, means in connection with said support to seat a blank within said opening, and means to impart a spiraL ing movement to said support, whereby to actuate the point of the blank engaged by the cutter in a flat spiral course to effect a scremhkeornamentation onsaidtlank, sub stanti'ally-as and for the purpose set forth. 11. In a shaping machine ofthe'character described, the combination of a horizontally disposed-rotary cutter, a work-support 00- operating therewith and situated with its axis in angular relation with respect to that i of the cutter, said support havingtherein a centrally arranged opening, means in connection with said support to centrally seat a blank within" saidopening, and means to impart; a spiraling'movement to'saidsupport, whereby to 1 actuate the point of the blank engaged by the cutter in a flat spiral course i to effect a scroll-like ornamentation thereon, substantially as and for the purpose set forth, 12 Ina shaping machine of the character described,the combination of a rotary cutter, a vertically adjustable casting, a collar carried thereby and encircling the cutter in a plane atanangle'to the axis thereof,a work-support rotatably connected with said justable casting andcooperating with said support, whereby, as the latter is rotated, the point of the work-engaged by the cutter will be actuatedin a flat spiral course, sub- 'stantially as and for the purpose setforth.

13. Ina shaping machine of the character described, the combination of arotary cutter, a vertically adjustable casting, a col lar carriedby said casting and encircling the cutter at anangle to, its axis, a worksu'pport rotatably carried by saidcollar, said"supporthaving therein a centrally a r-= ranged opening, a blank, means in connec tion with said support to centrally seat said blank in said openi-ng, and means-connected withsaid adjustable casting and cooperating with said work-support, whereby, as the latter is rotated, said casting will be vertically adjusted to advance or recede the axis of said support with respect to that of said cutter, substantially as and for the purpose set forth.

14:- In a shaping machine of the character described, the combination of a rotary cutter, a collar encircling. said cutter at an angle to its axis, a casting carrying said collar, a. vertically adjustable and arcuately movable pintle supporting said casting, a pinion'keyed to said pintle, a work-support rotatably affixed to said collar, means on the periphery of said work-support to engage the teeth of said pinion to rotate the latter and vertically actuate said pintle, whereby to advance or recede the casting of said support with respect to that of the cutter, substantially as and for the purpose set forth.

15. In a shaping machine of the character described, the combination of a horizontally disposed rotary spindle, a cutter carried thereby, a collar encircling said cutter at an angle to its axis, a vertically adjustable casting carrying said collar, a work-support ro- 35-, nular Work-support rotatably afiixed to said tatably carried by said collar, and means operating ,Withsaid work-support and con- 7 nected-With said casting, whereby, as the formeris' revolved, thelatterwill be vertically adjusted to advance or recede the axis of the work-support with respect to that ofthe vcutter, substantially as and for the purpose set forth.

described, the combination disposed rotarycutterj spindle, a collar enthereof to bejoperated upon by the cutter,

16. In; a. shaping machine of the character of ahorizontally circling the cutter at an angle to its axis, a movable casting carrying said collar, a vertically adjustable and arcuately movable pintle connected with said casting, a pinion' keyed tosaid pintle, an'annular work support rotatably afiixed to said collar, said support having therein a centrally arranged opening, means in connection with said support-to, centrally seat a blank in the opening andmeans on the periphery of said workdescribed, the [combination of a horizontally disposed-rotary cutter spindle, a collar ensupport co-Eacting with said pinion, substantially as and for the purpose'setforth.

17.- In a shaping machine of the'character circling the cutter, at an angle to itsaxis, a ylllOViiblB- casting carrying said collar, a

vertically adjustable pintle connected 'With "collar, said, support having therein a cen- Gopies or this patent at be obtained for te -teem trally arranged opening, means in connec-' tion with said support to centrally seat a blank in the opening thereof, to be operated upon by the cutter, and means on the periphcry of said support co-acting with said pinion, substantially as and for the purpose set forth.

18. In a shaping machine of the character described, the combination of a frame, a rotary spindle positioned thereon,-a cutter carried by said spindle, a collar encircling said cutter at an angle to its axis, a vertically movable casting carrying said collar, a Work-support rotatably affixed to said collar, and having therein a centrally arranged opening, means in connection with said support to centrally position a blank in said opening, cogs on the periphery of said Worksupport, an extension on said frame, said extension having a seat therein, an elliptical shaped nut, disposed within said seat and formed with an internally threaded opening, an externally threaded pintle cooperating 1 with the opening in said nut, said pintle having its upper extremity connected with said casting and a pinion keyed to said pintle and mitering with the cogs on said worksupport, whereby, as the latter is rotated, its axis will be advanced or receded With respect to that of said spindle, substantially as and for the purpose set forth.

NICHOLAS P. PERKINS.

Witnesses:

D. F. TRAOEY, ALE MOTTESHEARD.

five cents each, by addressing the Commissioner of Patents, Washington, D. 0 

